The 'secret' posted on the PostSecrets site, a purported murder confession did not impress the site's Twitter followers. Picture: PostSecrets. Source: Supplied

FIRST it was a mysterious and sinister note posted on the internet confessional site, PostSecret, a repository for people to send in anonymous admissions on postcards.

The admissions usually run to people's thoughts about their families, relationships, or naughty things they may have done.

But last weekend, a "Sunday Secrets" post included a postcard with an image of a location on a Google map on one side. On the other side were the words:

"I said she dumped me, but really, I dumped her (body)."

Was it a murder confession?

PostSecret proceeded to post the card on its Twitter account in an effort to throw some light on the post.

PostSecret founder, Frank Warren, tweeted: "I have tried to share all the information I have on the top secret this week. Can we ask Reddit to help identify the location?"

Warren's attempt to source information about the potential crime attracted interest from Reddit, but also from people who believed he should pass the information on to police to establish if a real crime had taken place, or if it was a hoax.

Many followers thought it was "exploitive" and "horribly ill-advised" for Warren to allow the post on his site without knowing whether it was related to a murder.

@postsecret posting that photo and map of a where a dead woman's body may lay, is exploitative and wrong. What is wrong with you!?!

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